{"id":91,"date":"2021-08-26T17:34:33","date_gmt":"2021-08-26T09:34:33","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=91"},"modified":"2021-08-26T17:34:33","modified_gmt":"2021-08-26T09:34:33","slug":"java-util-arrays","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-91.html","title":{"rendered":"java.util.Arrays"},"content":{"rendered":"\n<p>Arrays \u5bf9\u8c61\u662f JDK \u5c01\u88c5\u7684\u65b9\u4fbf\u64cd\u4f5c\u6570\u7ec4\u5bf9\u8c61\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9759\u6001\u65b9\u6cd5<\/p>\n\n\n\n<p>\u5b98\u65b9\u6587\u6863\u4f20\u9001\u95e8\uff1a<a href=\"https:\/\/java-api.52dixiaowo.com\/libs\/jdk-6-zh\/java\/util\/Arrays.html\" target=\"_blank\" rel=\"noreferrer noopener\">java.util.Arrays<\/a><\/p>\n\n\n\n<h5>1.\u5bfc\u5305<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Arrays;<\/code><\/pre>\n\n\n\n<h5>2.\u9759\u6001\u65b9\u6cd5<\/h5>\n\n\n\n<p>1.\u8f93\u51fa\u6570\u7ec4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int&#91;] a = {2,3,4};\n\/\/ Arrays.toString() \u8f93\u51fa\u4e00\u7ef4\u6570\u7ec4\nSystem.out.println(Arrays.toString(a)); \/\/&#91;2, 3, 4]\nint&#91;]&#91;] b = {{1,2},{3,4}};\n\/\/ Arrays.deepToString() \u8f93\u51fa\u591a\u7ef4\u6570\u7ec4\nSystem.out.println(Arrays.deepToString(b));\/\/&#91;&#91;1, 2], &#91;3, 4]]<\/code><\/pre>\n\n\n\n<p>2.\u5143\u7d20\u586b\u5145\uff08\u53ef\u4ee5\u6307\u5b9a\u8303\u56f4\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int&#91;] a = {2,3,4};\nArrays.fill(a, 1); \/\/\u5bf9\u6240\u6709\u5143\u7d20\u586b\u5145\u503c\nSystem.out.println(Arrays.toString(a)); \/\/ &#91;1, 1, 1]<\/code><\/pre>\n\n\n\n<p>3.\u6570\u7ec4\u6392\u5e8f\uff08\u53ef\u4ee5\u6307\u5b9a\u8303\u56f4\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int&#91;] a = {5,3,4};\nArrays.sort(a); \/\/\u5bf9\u5143\u7d20\u8fdb\u884c\u6392\u5e8f\nSystem.out.println(Arrays.toString(a)); \/\/&#91;3, 4, 5]\n\/\/\u81ea\u5b9a\u4e49\u7684\u7c7b\u578b\u4f7f\u7528sort\uff0c\u8be5\u7c7b\u5fc5\u987b\u5b9e\u73b0 Comparable \u6216 Comparator \u63a5\u53e3<\/code><\/pre>\n\n\n\n<p>4.\u8f6c\u6362\u4e3a List \uff08\u4e0d\u53ef\u53d8\u957f\u5ea6\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>List&lt;String> list = Arrays.asList(\"a\",\"b\",\"c\"); \/\/\u53c2\u6570\u662f\u4e00\u4e2a\u53ef\u53d8\u53c2\u6570\n\/\/\u4f7f\u7528\u6b64\u65b9\u6cd5\u8f6c\u53d8\u4e3aList\uff0c\u8be5List\u5bf9\u8c61\u4e0d\u53ef\u518d\u6539\u53d8\u957f\u5ea6 <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Arrays \u5bf9\u8c61\u662f JDK \u5c01\u88c5\u7684\u65b9\u4fbf\u64cd\u4f5c\u6570\u7ec4\u5bf9\u8c61\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9759\u6001\u65b9\u6cd5 \u5b98\u65b9\u6587\u6863\u4f20\u9001\u95e8\uff1ajava.util.&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-91.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java.util.Arrays<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/91"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/91\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=91"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=91"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}